/*
 * TeleStax, Open Source Cloud Communications  Copyright 2012.
 * and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.mobicents.protocols.ss7.cap.service.gprs.primitive;

import java.io.IOException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.cap.api.CAPException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentExceptionReason;
import org.mobicents.protocols.ss7.cap.api.primitives.MonitorMode;
import org.mobicents.protocols.ss7.cap.api.service.gprs.primitive.GPRSEvent;
import org.mobicents.protocols.ss7.cap.api.service.gprs.primitive.GPRSEventType;
import org.mobicents.protocols.ss7.cap.primitives.SequenceBase;
import org.mobicents.protocols.ss7.map.api.MAPParsingComponentException;

/**
 * 
 * @author Lasith Waruna Perera
 * 
 */
public class GPRSEventImpl extends SequenceBase implements GPRSEvent{
	
	public static final int _ID_gprsEventType = 0;
	public static final int _ID_monitorMode = 1;
	
	private GPRSEventType gprsEventType;
	private MonitorMode monitorMode;

	public GPRSEventImpl() {
		super("GPRSEvent");
	}

	public GPRSEventImpl(GPRSEventType gprsEventType,
			MonitorMode monitorMode) {
		super("GPRSEvent");
		this.gprsEventType = gprsEventType;
		this.monitorMode = monitorMode;
	}

	@Override
	public GPRSEventType getGPRSEventType() {
		return this.gprsEventType;
	}

	@Override
	public MonitorMode getMonitorMode() {
		return this.monitorMode;
	}

	@Override
	protected void _decode(AsnInputStream asnIS, int length)
			throws CAPParsingComponentException, IOException, AsnException,
			MAPParsingComponentException {

		this.gprsEventType = null;

		AsnInputStream ais = asnIS.readSequenceStreamData(length);
		while (true) {
			if (ais.available() == 0)
				break;

			int tag = ais.readTag();

			if (ais.getTagClass() == Tag.CLASS_CONTEXT_SPECIFIC) {
				switch (tag) {
				case _ID_gprsEventType:
					if (!ais.isTagPrimitive())
						throw new CAPParsingComponentException(
								"Error while decoding " + _PrimitiveName + ".gprsEventType: Parameter is not primitive",
								CAPParsingComponentExceptionReason.MistypedParameter);
					int i1 = (int) ais.readInteger();
					this.gprsEventType = GPRSEventType.getInstance(i1);
					break;		
				case _ID_monitorMode:
					if (!ais.isTagPrimitive())
						throw new CAPParsingComponentException(
								"Error while decoding " + _PrimitiveName + ".monitorMode: Parameter is not primitive",
								CAPParsingComponentExceptionReason.MistypedParameter);
					int i2 = (int) ais.readInteger();
					this.monitorMode = MonitorMode.getInstance(i2);
					break;	
				default:
					ais.advanceElement();
					break;
				}
			} else {
				ais.advanceElement();
			}
		}
		
		
		if (this.gprsEventType == null)
			throw new CAPParsingComponentException("Error while decoding " + _PrimitiveName + ": parameter gprsEventType is mandatory but not found",
					CAPParsingComponentExceptionReason.MistypedParameter);
		
		if (this.monitorMode == null)
			throw new CAPParsingComponentException("Error while decoding " + _PrimitiveName + ": parameter monitorMode is mandatory but not found",
					CAPParsingComponentExceptionReason.MistypedParameter);
	
	}
	
	@Override
	public void encodeData(AsnOutputStream asnOs) throws CAPException {
		
		try {
			if (this.gprsEventType == null)
				throw new CAPException("Error while encoding " + _PrimitiveName + ": gprsEventType must not be null");
			
			if (this.monitorMode == null)
				throw new CAPException("Error while encoding " + _PrimitiveName + ": monitorMode must not be null");
			
			asnOs.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_gprsEventType, this.gprsEventType.getCode());
			
			asnOs.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_monitorMode, this.monitorMode.getCode());
			
		} catch (IOException e) {
			throw new CAPException("IOException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}
	

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(_PrimitiveName + " [");

		if (this.gprsEventType != null) {
			sb.append("gprsEventType=");
			sb.append(this.gprsEventType.toString());
			sb.append(", ");
		}
		
		if (this.monitorMode != null) {
			sb.append("monitorMode=");
			sb.append(this.monitorMode.toString());
		}

		sb.append("]");

		return sb.toString();
	}

}
